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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 16. Отображено 16.
21-09-2005 дата публикации

Preparation method of precipitated silicon dioxide

Номер: CN0001669922A
Принадлежит:

The invention relates to a preparing method for depositing silica dioxide, which comprises the following steps: dissolving the silicate of alkali metal to saline solution a with water, dissolving the soluble salt of metallic ion with 2 valency or above 2 valency to saline solution b with water as a polymerization inhibitor, reacting with between saline solution a and saline solution b at a temperature of 10 -80 Deg. C to get the compound c, heating the compound c to 60-95 Deg. C, acidifying by adding acidating agent and adjust the PH in 1-5 to get the compound d1, then maturing 3-100 min with respect to heat to get the compound d2, filtering, washing and drying compound d2, to get the ultra-fine disposition silica dioxide.

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01-07-2015 дата публикации

Method and device for producing refined brine by utilizing bromine extraction brine

Номер: CN104743582A
Принадлежит:

The invention discloses a method and a device for producing refined brine by utilizing bromine extraction brine. The method comprises the following steps: adjusting the pH value of the bromine extraction brine to 5-8, intercepting solid particles and mechanical impurities through mechanical microfiltration, adding a reducing agent to remove oxidized substances, carrying out ultrafiltration to remove small particles, colloids and macromolecular organic compounds, then, removing most of sulphate radicals and calcium and magnesium ions through nanofiltration interception so as to obtain brine dissolved raw salt, preparing the brine dissolved raw salt into saturated brine, further refining to remove the calcium and magnesium ions by adopting a chemical method so as to obtain refined brine and brine sludge, and returning the brine sludge back to the first step to adjust the pH value of the bromine extraction brine. By means of the method disclosed by the invention, high-efficiency utilization ...

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23-06-2023 дата публикации

Method for synthesizing vinylene carbonate through circulating dehydration

Номер: CN116283882A
Принадлежит:

The invention provides a method for synthesizing vinylene carbonate through circulating dehydration, and belongs to the technical field of preparation of additives of lithium battery electrolyte. Mixing the chloroethylene carbonate with a polymerization inhibitor, an organic solvent and a phase transfer catalyst, and adding sodium bicarbonate in batches for reaction; generated water is adsorbed by a molecular sieve through a circulating system, positive reaction is promoted, by-product carbon dioxide can be directly discharged through a condensing system, and by-product sodium chloride crystals are directly filtered and removed; the residual crude reaction liquid mainly contains vinylene carbonate, a solvent and other components, is easy to separate and small in distillation and rectification load, and is easy to obtain high-purity vinylene carbonate. According to the process, triethylamine hydrochloride is not generated, kettle coke is not generated in the synthesis, distillation and rectification ...

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26-11-2014 дата публикации

Analyzing and monitoring method for circulating mother liquor during production of 1,2-dichloroethane

Номер: CN104165935A
Принадлежит:

The invention discloses an analyzing and monitoring method for a circulating mother liquor during production of 1,2-dichloroethane. The analyzing and monitoring method comprises the steps of firstly sampling and weighing the mother liquor; carrying out preliminary filtration; weighing the mass of filter residues; distilling the filtered mother liquor; pre-setting a condensing temperature of a distillation system at -10 DEG C-20 DEG C; starting a heating device of the distillation device when a temperature reach the set condensing temperature; raising a distillation temperature to 80 DEG C-120 DEG C gradually; stopping distillation when the temperature stops increasing and starts to decrease under a continuously heating state; cooling to a room temperature; weighing the mass of the distilled residues; sampling and injecting a distillate into a gas chromatograph; normalizing corrected area to obtain chromatographic analysis results of various low-boiling point components; and converting by ...

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16-05-2023 дата публикации

Preparation method of ethylene sulfate

Номер: CN116120275A
Принадлежит:

The invention discloses a preparation method of ethylene sulfate, which belongs to the field of chemical synthesis, and comprises the following steps: mixing ethylene sulfite, a solvent, acetic acid and concentrated sulfuric acid, dropwise adding a hydrogen peroxide aqueous solution at 5-50 DEG C for 1-2 hours, after the dropwise adding is finished, carrying out heat preservation reaction for 2-10 hours, and keeping the temperature consistent with the temperature during the dropwise adding; and after the thermal insulation reaction is finished, washing the reaction completion liquid with water until the water phase is neutral, taking the organic phase and removing the solvent to obtain an ethylene sulfate crude product, recrystallizing the ethylene sulfate crude product with dichloromethane, and carrying out solid-liquid separation and drying to obtain the ethylene sulfate. The method provided by the invention can greatly reduce the amount of salt-containing wastewater, has the advantages ...

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28-03-2001 дата публикации

Stereo embroidery and its product

Номер: CN0001288984A
Принадлежит:

The present invention relates to a stereo embrodiery making method and its product. It is characterized by that a base cloth is laid and positioned on the working platform of numerically-controlled computer embriodery machine, then a filling material is stuck on the position of said base cloth in which the pattern can be stitched, then the filling material is stitched with embroidery yarm, and covered with the embroidery yarn, and the filling material is removed to form first covering layer smaller than the preset pattern, then the first covering layer is stitched with embroidery yarn to formsecond covering layer so as to obtain the invented stereo embroidery pattern.

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11-07-2023 дата публикации

Preparation method of sodium bis (fluorosulfonyl) imide

Номер: CN116409761A
Принадлежит:

The invention discloses a preparation method of sodium bis (fluorosulfonyl) imide, and belongs to the technical field of sodium-ion battery electrolyte additives and fluorine chemical industry. The preparation method of the sodium bis (fluorosulfonyl) imide comprises the following steps: (1) reacting sodium fluorosulfonate with chlorosulfonyl isocyanate under the action of a catalyst to generate sodium chloro (fluorosulfonyl) imide; and (2) synthesizing the sodium bis (fluorosulfonyl) imide from the chloro-fluorosulfonyl imide and sodium fluoride in the absence of a catalyst. The sodium bis (fluorosulfonyl) imide is prepared through a simple synthesis method, in the first step, sodium fluorosulfonate and chlorosulfonyl isocyanate are adopted as raw materials, generation of SO2 and HCl poisonous gas is avoided, the method is more environmentally friendly, and meanwhile the product yield is higher; a catalyst is not needed in the second-step reaction, and product purification is facilitated ...

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02-05-2023 дата публикации

Method for preparing basic calcium chloride eutectic from ammonia distillation wastewater

Номер: CN116040672A
Принадлежит:

The invention discloses a method for preparing basic calcium chloride eutectic from ammonia distillation wastewater, and belongs to the technical field of basic calcium chloride preparation. The method comprises the following steps: precipitating ammonia distillation wastewater to obtain supernatant liquid and ammonia distillation waste residues, filtering the supernatant liquid through a microfiltration and/or ultrafiltration device to obtain ammonia distillation waste supernatant liquid, adding a pH regulator into the ammonia distillation waste supernatant liquid, performing low-temperature crystallization on an alkaline solution after pH regulation to obtain a solid-liquid mixture, and filtering to obtain basic calcium chloride crystals and mother liquor, and drying the basic calcium chloride crystal to obtain a basic calcium chloride eutectic product. Ammonia distillation waste residues are ground into fine particles, the fine particles are mixed with mother liquor to obtain turbid ...

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30-06-2023 дата публикации

Preparation method of three-dimensional ordered macroporous sodium ion battery negative electrode material

Номер: CN116364904A
Принадлежит:

The invention discloses a preparation method of a three-dimensional ordered macroporous sodium ion battery negative electrode material, and belongs to the technical field of sodium ion battery negative electrode materials. Dissolving tetrabutyl titanate and zinc nitrate hexahydrate in absolute ethyl alcohol to obtain a first solution, dissolving citric acid in absolute ethyl alcohol to obtain a second solution, and mixing the first solution and the second solution to obtain a precursor solution; dipping the polystyrene sphere hard template in the precursor solution, taking out and drying to obtain a precursor; and carbonizing the precursor in an argon atmosphere to obtain the three-dimensional ordered macroporous sodium ion battery negative electrode material. According to the method, high-conductivity Ti-ZnO can be generated to serve as a main body material, a three-dimensional ordered macroporous structure serves as a supporting material, and the three-dimensional ordered macroporous ...

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07-01-2015 дата публикации

Parallel loop device for directly chloridizing to produce 1,2-dichloroethane

Номер: CN104262077A
Принадлежит:

The invention discloses a parallel loop device for directly chloridizing to produce 1,2-dichloroethane. The device comprises an annular pipeline reaction system, a product vaporization, separation and collection system, and an external circulating and feeding system, wherein at least two tubular chlorination reactors are connected in parallel, are collected into one pipe at the bottoms and then are communicated with the bottom of a mother liquor circulating reflux pipe; the external circulating and feeding system additionally leads out one path of dichloroethane mother liquor external circulating pipeline from the bottom of a vaporization container, and then divides into two paths; one path of dichloroethane mother liquor external circulating pipeline is firstly connected with a cooler, is sequentially connected with a chlorine feeding pipeline and a dissolved chlorine mixer, and then is communicated with a chlorine feeding hole of each tubular reactor; and the other path of dichloroethane ...

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17-12-2014 дата публикации

Grease separator

Номер: CN104210130A
Принадлежит:

The invention discloses a greaser separator. The grease separator comprises a solid-liquid separation module and an outer shell module, wherein the solid-liquid separation module comprises a motor, a feed hopper, a flow sensor, a screw, a filter screen, a movable cover, a shell, a liquid water outlet, an end cover, a movable end cover, a flange end cover, bolts, nuts, a feed hopper filter screen, a spring and a baffle; the outer shell module comprises a garbage storage bucket, a grease storage bucket, a grease-water separator and an outer shell. The greaser separator has the advantages that since the feed hopper filter screen is arranged at the inlet of the feed hopper, large-size objects and ropes can be prevented from entering the shell and the situation that the blade of the screw gets stuck or twisted is avoided; since the sensor is adopted at the inlet, operation can be automatically completed without manual control; through the design of the movable end cover, pretightening force ...

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03-03-2010 дата публикации

Electric furnace burden process with high efficiency and low cost

Номер: CN0101660019A
Принадлежит:

The invention relates to an electric furnace burden process with high efficiency and low cost. Main raw materials are molten iron accounting for 30-60 percent of metal adding amount, excellent scrap steel accounting for 5-10 percent of metal adding amount and low-lost scrap steel accounting for 30-35 percent of metal adding amount; auxiliary materials are lime and soft burning dolomite, wherein 3.0-3.5 percent of lime and 1.0-1.5 percent of soft burning dolomite are respectively added in each ton of molten steel; and through optimizing electric furnace slag discharge operation, using an oxygenlance and adopting power supply oxygen blowing control and other smelting processes, the electric furnace burden process greatly improves simultaneous hit rate of terminal point components and the temperature of an electric arc furnace, realizes the aims of improving the quality of the molten steel, shortening the smelting period and reducing the consumption and significantly reduces the full oxygen ...

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19-08-2015 дата публикации

Method used for applying bromine extraction bittern to sodium carbonate production

Номер: CN104843741A
Принадлежит:

The invention provides a method used for applying bromine extraction bittern to sodium carbonate production. The method comprises following steps: pH value of the bromine extraction bittern is adjusted so as to remove oxidizing substances in the bromine extraction bittern, and solid particles are removed via sand filtration so as to obtain a bittern containing no oxidizing substances or solid particles, wherein the pH value of the obtained bittern ranges from 5 to 7; fine particles, colloids, and macromolecular organic compounds are removed via ultrafiltration, and the vast majority of sulfate radicals and the great mass of calcium and magnesium ions are intercepted via nanofiltration; and an obtained refined bittern is delivered into a sodium carbonate production system for salt dissolving. According to the method, sodium chloride in the bromine extraction bittern is used with high efficiency, and cost decreasing and benefit increasing of sodium carbonate production are realized.

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23-06-2023 дата публикации

Method for continuously preparing bromine chloride

Номер: CN116281865A
Принадлежит:

The invention discloses a method for continuously preparing bromine chloride, and belongs to the field of chemical synthesis, bromine or a mixed solution containing bromine and a diluent and chlorine are respectively fed into a reactive distillation tower from the middle part and chlorine from the bottom, so that the chlorine and bromine are fully mixed and reacted in a stripping section, and the reaction temperature of the stripping section is controlled through a heat exchange system of the stripping section; the reaction temperature of the rectifying section is controlled through a heat exchange system of the rectifying section, so that the reaction mixed liquid realizes separation of a mixture of bromine, bromine chloride and chlorine in the rectifying section; the separated bromine chloride and chlorine gas mixture is condensed by a condenser and then enters a gas-liquid separator, so that chlorine gas is separated from bromine chloride; and feeding the separated bromine chloride into ...

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23-06-2023 дата публикации

Method for continuously producing vinylene carbonate by using microchannel reactor

Номер: CN116283883A
Принадлежит:

The invention provides a method for continuously producing vinylene carbonate by using a microchannel reactor, and belongs to the technical field of preparation of additives of lithium battery electrolyte. Ethylene carbonate and chlorine are used as raw materials, an initiator, a polymerization inhibitor and an organic solvent are not required to be added, the temperature is not higher than 70 DEG C, the pressure is not higher than 30 bar, chloroethylene carbonate is synthesized through a first-stage microchannel reactor, a crude vinylene carbonate mixture is synthesized from chloroethylene carbonate, a tertiary amine dehalogenating agent and an ionic liquid in a second-stage microchannel reactor, and the crude vinylene carbonate mixture is recycled. And carrying out reduced pressure rectification on the mixture to obtain a vinylene carbonate finished product, so that the tertiary amine dehalogenating agent and the ionic liquid can be recycled. The micro-channel reactor is used as equipment ...

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23-09-1998 дата публикации

Yarn end remover for knitted fabric and sewing stitch thread

Номер: CN0002292109Y
Принадлежит: ZHOU LIYING

The utility model relates to a yarn end remover for a knitted fabric and a sewing stitch thread, which is composed of an electric pruning tool, an air suction pipe and a suction device. A shearing tool part which is driven by a motor is slantwise arranged at the bottom end of the electric pruning tool, the air suction pipe is fixed to the upper part of the electric pruning tool, a suction inlet which is used for sucking the air is positioned at the upper part of the shearing tool part, an air sucking mouth of the air suction pipe is connected with the suction device, and the suction device can be a suction cleaner. When the shearing tool part is contacted with the back surface of an embroidery, a flat suction inlet of the air suction pipe can suck the inverted thread ends; thus, all thread ends can be sheared by the shearing tool part, and the thread ends are sucked away; thereby, the knitted fabric or the embroidery can have the clean back surfaces.

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